Microstructure and mechanical properties of laser butt welds of selective laser melted Ta10W alloy plates with different forming directions
This study investigates the anisotropy effect of Ta10W alloy manufactured by selective laser melting (SLM) on the microstructure and mechanical properties of the three butt welds. The welds were characterized by formation, microstructure, microhardness, room temperature (RT) strength, high temperatu...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-09-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423022536 |
| _version_ | 1797646685646618624 |
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| author | Xin Du Qiang Wu Tong Zhang Jianglin Zou Rongshi Xiao Haipeng Zhou Ding Han Tingyou Jiao |
| author_facet | Xin Du Qiang Wu Tong Zhang Jianglin Zou Rongshi Xiao Haipeng Zhou Ding Han Tingyou Jiao |
| author_sort | Xin Du |
| collection | DOAJ |
| description | This study investigates the anisotropy effect of Ta10W alloy manufactured by selective laser melting (SLM) on the microstructure and mechanical properties of the three butt welds. The welds were characterized by formation, microstructure, microhardness, room temperature (RT) strength, high temperature (HT) strength, and fracture morphology. Results indicate that Ta10W manufactured by SLM exhibits anisotropy in microstructure and properties, leading to notable differences in the welds' microstructure and mechanical properties. When the base metal's X-axis aligns with the welding direction, the weld forms columnar sub-grains, whereas aligning the base metal's Z-axis with the welding direction results in equiaxed sub-grains in the weld. These distinct microstructures influence the maximum RT strength, with the X + X weld displaying significantly higher strength (751.33 MPa) compared to the X + Z (672.00 MPa) and Z + Z (667.25 MPa) welds. Fracture analysis reveals a transition from cleavage fracture to intergranular fracture in three welds. The microhardness and HT strength of the welds exhibit an inapparent difference, with the microhardness of approximately 305 HV0.2/15 and the HT (1800 °C) strength of around 110.50 MPa. |
| first_indexed | 2024-03-11T15:05:14Z |
| format | Article |
| id | doaj.art-e06c63e9414e47f298993ce052718e01 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-11T15:05:14Z |
| publishDate | 2023-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-e06c63e9414e47f298993ce052718e012023-10-30T06:04:41ZengElsevierJournal of Materials Research and Technology2238-78542023-09-012680978110Microstructure and mechanical properties of laser butt welds of selective laser melted Ta10W alloy plates with different forming directionsXin Du0Qiang Wu1Tong Zhang2Jianglin Zou3Rongshi Xiao4Haipeng Zhou5Ding Han6Tingyou Jiao7Intelligent Photon Manufacturing Research Center, Institute of Laser Engineering, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, ChinaIntelligent Photon Manufacturing Research Center, Institute of Laser Engineering, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, China; Corresponding author.Intelligent Photon Manufacturing Research Center, Institute of Laser Engineering, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, ChinaIntelligent Photon Manufacturing Research Center, Institute of Laser Engineering, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, ChinaIntelligent Photon Manufacturing Research Center, Institute of Laser Engineering, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, ChinaScience and Technology on Scramjet Laboratory, Beijing Power Machinery Institute, Beijing, 100074, China; Corresponding author.Science and Technology on Scramjet Laboratory, Beijing Power Machinery Institute, Beijing, 100074, ChinaScience and Technology on Scramjet Laboratory, Beijing Power Machinery Institute, Beijing, 100074, ChinaThis study investigates the anisotropy effect of Ta10W alloy manufactured by selective laser melting (SLM) on the microstructure and mechanical properties of the three butt welds. The welds were characterized by formation, microstructure, microhardness, room temperature (RT) strength, high temperature (HT) strength, and fracture morphology. Results indicate that Ta10W manufactured by SLM exhibits anisotropy in microstructure and properties, leading to notable differences in the welds' microstructure and mechanical properties. When the base metal's X-axis aligns with the welding direction, the weld forms columnar sub-grains, whereas aligning the base metal's Z-axis with the welding direction results in equiaxed sub-grains in the weld. These distinct microstructures influence the maximum RT strength, with the X + X weld displaying significantly higher strength (751.33 MPa) compared to the X + Z (672.00 MPa) and Z + Z (667.25 MPa) welds. Fracture analysis reveals a transition from cleavage fracture to intergranular fracture in three welds. The microhardness and HT strength of the welds exhibit an inapparent difference, with the microhardness of approximately 305 HV0.2/15 and the HT (1800 °C) strength of around 110.50 MPa.http://www.sciencedirect.com/science/article/pii/S2238785423022536SLMed Ta10WLaser weldingAnisotropyMicrostructureMechanical properties |
| spellingShingle | Xin Du Qiang Wu Tong Zhang Jianglin Zou Rongshi Xiao Haipeng Zhou Ding Han Tingyou Jiao Microstructure and mechanical properties of laser butt welds of selective laser melted Ta10W alloy plates with different forming directions Journal of Materials Research and Technology SLMed Ta10W Laser welding Anisotropy Microstructure Mechanical properties |
| title | Microstructure and mechanical properties of laser butt welds of selective laser melted Ta10W alloy plates with different forming directions |
| title_full | Microstructure and mechanical properties of laser butt welds of selective laser melted Ta10W alloy plates with different forming directions |
| title_fullStr | Microstructure and mechanical properties of laser butt welds of selective laser melted Ta10W alloy plates with different forming directions |
| title_full_unstemmed | Microstructure and mechanical properties of laser butt welds of selective laser melted Ta10W alloy plates with different forming directions |
| title_short | Microstructure and mechanical properties of laser butt welds of selective laser melted Ta10W alloy plates with different forming directions |
| title_sort | microstructure and mechanical properties of laser butt welds of selective laser melted ta10w alloy plates with different forming directions |
| topic | SLMed Ta10W Laser welding Anisotropy Microstructure Mechanical properties |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423022536 |
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